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From "Wenchen Fan (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (SPARK-12474) support deserialization for physical plan and hive logical plan from JSON string
Date Tue, 22 Dec 2015 03:04:46 GMT

     [ https://issues.apache.org/jira/browse/SPARK-12474?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Wenchen Fan updated SPARK-12474:
--------------------------------
    Priority: Minor  (was: Major)

> support deserialization for physical plan and hive logical plan from JSON string
> --------------------------------------------------------------------------------
>
>                 Key: SPARK-12474
>                 URL: https://issues.apache.org/jira/browse/SPARK-12474
>             Project: Spark
>          Issue Type: New Feature
>            Reporter: Wenchen Fan
>            Priority: Minor
>
> SPARK-12321 add a framework based on reflection that can serialize {{TreeNode}} to JSON
and deserialize it back. However, it can't handle all corner cases and we bypass them in the
test, see https://github.com/apache/spark/pull/10311/files#diff-238d584c15e16c24f49a40bcf163fe13R190
and https://github.com/apache/spark/pull/10311/files#diff-238d584c15e16c24f49a40bcf163fe13R212.
> known corner cases:
> 1. ExpressionEncoder
> 2. BaseRelation
> 3. hive logical plan
> 4. physical plan
> The framework is in catalyst module and may not be able to handle corner cases from other
modules, an idea is defining a {{JsonSerializable}} trait and implement it for corner cases.



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